Hi,
Thanks for playing!
Maybe I could have been more clear but the checkpoints specifically refer to the IRyS checkpoints scattered throughout the level, and the start of the level.
If those aren't working though then we actually have a problem lol.
I'm sorry if the controls are weird. Customizable controls weren't something I really thought about. That's my bad.
As for the previous game I made, I was preparing an updated version but grew continuously dissatisfied with it (mainly constant performance issues + I grew to dislike the visuals), so I say we chalk up your memory of it as an instance of the Mandela Effect.